4. J02/3/4. Bromine is one of the
halogens in Group VII.
–(a) (i) Predict which halogen has the lightest
colour. [1]
•
•(ii) Predict which halogens are solids at room
temperature. [1]
–
–(b) Bromine is obtained from the bromide
ions in sea water. Sea water is concentrated by evaporation.
Chlorine gas is bubbled through the solution. Chlorine displaces
bromide ion converting it into bromine.
•(i) Complete the following equation.
–Cl2 + ......Br– ®................... + .................. [2]